Under some circumstances, natural radioactive substances, such as radon gas, can become concentrated and pose a threat to human health.

a. true
b. false


Ans: a. true

Biology & Microbiology

You might also like to view...

Somites arise from

a. endoderm. b. mesoderm. c. ectoderm. d. gastroderm. e. placoderm.

Biology & Microbiology

Which sturcture makes proteins using coded instructions that come from the nucleus?

A. Golgi Apparatus B. mitochondrion C. vacuole D. ribosome

Biology & Microbiology

Which idea is central to the biological species concept?

A. Vicariance B. Sexual selection C. divergent phenotypes D. reproductive isolation E. distinct lineages

Biology & Microbiology

List and explain five types of techniques that can be used to identify unknown microorganisms

What will be an ideal response?

Biology & Microbiology